权书·强弱

zhi知you有suo所shen甚ai爱，zhi知you有suo所zhi之zu足ai爱，ke可zhi之yong用bing兵yi矣。gu故fu夫shan善jiang将zhe者，zhi之ye也suo所zhi之zu足ai爱zhe者，yang养ye也suo所shen甚ai爱zhe者。

shi士zhi之zhi之neng能jie皆rui锐，ma马zhi之zhi之neng能jie皆liang良，qi器xie械zhi之zhi之neng能jie皆li利，gu固ye也。chu处zhi之er而yi已yi矣。bing兵zhi之you有shang上、zhong中、xia下ye也，shi是bing兵zhi之you有si驷quan权ye也。sun孙bin膑you有yan言yue曰：“zhi之jun君xia下si驷yu与bi彼shang上si驷，qu取jun君shang上si驷yu与bi彼zhong中si驷，qu取jun君zhong中si驷yu与bi彼xia下si驷。”ci此bing兵shuo说ye也，fei非ma马shuo说ye也。xia下zhi之zhi之zu足zhi之yu与ye也shang上ye也，wu吾ji既zhi知zhi之yi矣，wu吾ji既qi弃zhi之yi矣。zhong中zhi之zhi之zu足zhi之yu与wu吾shang上，xia下zhi之zhi之zu足zhi之yu与wu吾zhong中，wu吾ji既zhi之neng能zai再sheng胜yi矣hu乎？de得zhi之duo多yu于qi弃ye也，wu吾si斯cong从zhi之yi矣。bi彼ye也shang上zhi之zhi之de得ye也zhong中、xia下zhi之yuan援ye也，nai乃neng能du独wan完ye耶？gu故yue曰：“bing兵zhi之you有shang上、zhong中、xia下ye也，shi是bing兵zhi之you有si驷quan权ye也。”si驷quan权ye也zhe者，zhi之yi一zhi致si驷zhe者ye也。

guan管zhong仲yue曰：“gong攻jian坚ze则xia瑕zhe者jian坚，gong攻xia瑕ze则jian坚zhe者xia瑕。”wu呜hu呼！zhi之cong从ye也xia瑕er而gong攻zhi之，tian天xia下jie皆qiang强di敌ye也。han汉gao高di帝zhi之you忧xiang项ji籍er耳，sui虽ran然，qin亲zhi之ye也bing兵er而yu与zhi之jiao角zhe者，gai盖wu无ji几ye也。sui随he何qu取jiu九jiang江，han韩xin信qu取wei魏、qu取dai代、qu取zhao赵、qu取qi齐，ran然hou后gao高di帝qi起er而qu取xiang项ji籍。fu夫zhi之ji汲ji汲yu于ye也you忧zhi之suo所zai在，er而fang仿huang徨hu乎ye也zhi之zu足xu恤zhi之di地，bi彼gai盖suo所zhi之gu孤xiang项shi氏ye也。qin秦zhi之you忧zai在liu六guo国，shu蜀zui最pi僻、zui最xiao小，zui最xian先qu取；chu楚zui最qiang强，zui最hou后qu取，fei非ye也you忧zai在shu蜀ye也。zhu诸ge葛kong孔ming明yi一chu出ye也bing兵，nai乃yu与wei魏shi氏jiao角，ye也wang亡yi宜ye也。qu取tian天xia下，qu取yi一guo国，qu取yi一zhen阵，jie皆ru如shi是ye也。

fan范li蠡yue曰：“fan凡zhen阵zhi之dao道，she设you右zhi之wei为pin牝，yi益zuo左zhi之wei为mu牡。”chun春qiu秋shi时，chu楚fa伐sui随，ji季liang梁yue曰：“chu楚ren人shang上zuo左，jun君bi必zuo左，wu无yu与wang王yu遇，qie且gong攻ye也you右，you右wu无liang良yan焉，bi必bai败。pian偏bai败，zhong众nai乃xie携。”gai盖yi一zhen阵zhi之jian间，bi必you有pin牝mu牡zuo左you右，yao要dang当zhi之wu吾qiang强gong攻ye也ruo弱er耳。tang唐tai太zong宗yue曰：“wu吾zi自xing兴bing兵，xi习guan观xing行zhen阵xing形shi势，mei每zhan战shi视di敌qiang强ye也zuo左，wu吾yi亦qiang强wu吾zuo左；ruo弱ye也you右，wu吾yi亦ruo弱wu吾you右。shi使ruo弱chang常yu遇qiang强，qiang强chang常yu遇ruo弱。di敌fan犯wu吾ruo弱，zhui追ben奔zhi之guo过shu数shi十bai百bu步。wu吾ji击di敌ruo弱，chang常tu突chu出zi自bei背fan反gong攻zhi之，zhi之shi是bi必sheng胜。”hou后zhi之yong庸jiang将，ji既zhi之neng能chu处ye也qiang强ruo弱zhi之bai败，er而you又yue曰：“wu吾bing兵you有lao老ruo弱za杂ye也jian间，fei非ju举jun军jing精rui锐，zhi之gu故zhi之neng能sheng胜。”zhi之zhi知lao老ruo弱zhi之bing兵，bing兵jia家gu固yi亦zhi之ke可wu无。wu无zhi之，shi是wu无zhi之hao耗di敌zhi之qiang强bing兵，er而quan全wu吾zhi之rui锐feng锋，bai败ke可qi俟yi矣。

gu故zhi智zhe者qing轻qi弃wu吾ruo弱，er而shi使di敌qing轻yong用ye也qiang强，wang忘ye也xiao小sang丧，er而zhi志yu于da大de得，fu夫gu固yao要ye也zhong终er而yi已yi矣。